CaratHunter
Plans
Cushion|Lab Grown|IGI

1.21ct F VS1 Cushion Lab Grown Diamond

ID • F/VS1 • IGI LG817695911

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG817695911

Diamond specifications and retailer prices

From HK$1,881 HKD
As of November 6, 2026
Save HK$7,555 HKD (80%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$9,436 HKD at Flawless Fine Jewelry · As of November 6, 2026
View at Flawless Fine Jewelry

About this 1.21ct lab-grown cushion diamond

This 1.21ct lab-grown cushion sits in the classic one-carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG817695911 or 817695911. Listed at 16 retailers as of November 6, 2026, with prices from HK$1,881 to HK$9,436, a HK$7,555 spread on the same certified stone. Flawless Fine Jewelry lists it at HK$9,436. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817695911
Dimensions6.14 × 6.13 × 4.10 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.14 mm6.13 mm1.21 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817695911
Side View
Table 63.0%Crown 36.3°Girdle: MED-THKPavilion 39.5°Culet: NoneDepth 66.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: HK$9,436 HKD|Low: HK$1,732 HKD|High: HK$9,436 HKD|Avg: HK$4,497 HKD|+5.3%
Flawless Fine Jewelry
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 8HK$1,748 HKD
Retailer 3HK$1,881 HKD
Retailer 2HK$3,033 HKD
Retailer 9HK$3,072 HKD
Retailer 4HK$3,198 HKD
Retailer 10HK$3,260 HKD
Retailer 14HK$3,417 HKD
Retailer 15HK$4,334 HKD
Retailer 12HK$4,428 HKD
Retailer 11HK$4,742 HKD
Retailer 7HK$5,094 HKD
Retailer 13HK$5,173 HKD
Retailer 16HK$5,251 HKD
Retailer 5HK$6,262 HKD
Retailer 6HK$8,206 HKD
Flawless Fine JewelryHK$9,436 HKD

41 data points across 16 retailers

16 retailersHK$1,881 HKD to HK$9,436 HKD

Retailer 1
-
HK$1,748 HKD
Price last confirmed 13 days ago
A
Retailer 2
-
HK$1,881 HKD
View
Final sale: no returns
A
Retailer 3
-
HK$3,033 HKD
View
A
Retailer 4
-
HK$3,072 HKD
View
A
Retailer 5
-
HK$3,198 HKD
View
A
Retailer 6
-
HK$3,260 HKD
View
A
Retailer 7
-
HK$3,417 HKD
View
B+
Retailer 8
-
HK$4,334 HKD
View
B+
Retailer 9
-
HK$4,428 HKD
View
B+
Retailer 10
-
HK$4,742 HKD
View
Retailer 11
-
HK$5,094 HKD
View
Price last confirmed 10 days ago
B+
Retailer 12
-
HK$5,173 HKD
View
B+
Retailer 13
-
HK$5,251 HKD
View
B+
Retailer 14
-
HK$6,262 HKD
View
Retailer 15
-
HK$8,206 HKD
View
Price last confirmed 9 days ago
Most Expensive
B
Flawless Fine Jewelry
5A5E17ACD · Nov 6
HK$9,436 HKD
£948 GBP
View
15 more retailers have this diamond
Prices start from HK$1,881 HKDSave up to HK$7,555 HKD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.21ct Cushion
HK$1,881 HKD